Check valve



w. A. KEE

CHECK VALVE Filed Dec. 50, 1924 S Q I lllllllmlllllllllllllifi PatentedDec. 15, 1925.

UNITED STATES WILLIAM A. KEE, or JoPLIN, MISSOURI tsetse PATENT OFFICE.

, ASSIGNOR OF ONE-FOURTH TO JESSE A.

WORLEY AND ONE-FOURTH TO CULLIS M. HUMPHREYS, BOTH 0F BAXTER SPRINGS,

KANSAS.

CHECK VALVE.

Application filed December 30. 1924. Serial 'No. 758,870.

To all whom. it may concern:

Be it known that I, WILLIAM A. Knn, a citizen of the United States,residing at J oplin, in the county of Jasper and State of Missouri, haveinvented certain new and useful Improvements in Check Valves, of whichthe following is a specification.

This invention relates to check valves and more particularly to anintegral valve body having a substantially circular seat adapted to beengaged by a floating disk valve.

An important object of the invention is to provide means to permit theinsertion or withdrawal of the disk valve from the side of the valvecasing without disconnecting the valve from the associated piping.

A further object of the invention is to provide a device of the abovementioned character provided with a substantially circular valve seatopening of substantial area adapted to be covered by a disk valve whichmay be readily removed from the side of the valve casing.

Other obects and advantages of the invention will be apparent during thecourse of the following description. v

In the drawings I have shown one embodiment of the invention. In thisshowing,

Figure 1 is a central vertical sectional view,

Figure 2 is a section on line 22 of Fi ure 1,

igure 3 is a similar view on line 33 of Figure 1,

Figure 4 is a side elevation of the valve, and, I

Figure 5 is an enlarged detail sectional view of the valve element.

Referring to the drawings the numeral 10 designates a preferablyintegral valve casing having inlet and outlet openings 11 and 12respectively. The valve casing may be provided at its opposite ends wlthflanges 13 provided With apertures 14 to receive bolts y means of whichthe valve casing may be suitably connected to similarly flanged inletand outlet pipes. It will bev obvious of course that the valve casingmay be provided with any suitable securing means for connecting thevalve casing to the inlet and outlet pipes. The portion of the valvecasing intermediate the ends is substantially enlarged as at 15 toprovide a substantially circular inner valve chamber 16. The chamber 16is provided intermediate its ends with a horizontal annular valve seat17. The chamber 16 is also provided substantially axially thereof with adome 18 having an an outwardly projecting annularflange 19 which issubstantially flush with the seat 17 and cooperates therewith to form aunitary seat adapted to be engaged by a valve to be described. The dome18 is preferably connected to the valve casing by means of integral webs20 as shown in Figures 1 and .3. It will be obvious that the spacesbetween the seats 17 and 19 and between the webs 20 form in effect acircular valve seat opening having an area substantially equal to thearea of the inlet opening 11 or outlet opening 12.

A valve element 21 is arranged within the casing andhas ahorizontallower face 22 which is adapted to engage the seats 17 and 19 as will beobvious. The valve 21 is preferably slightly narrower than the spacebeof the walls 23 are preferably tangential to the inner surface of thevalve chamber 16. as shown. The opening 24 is provided with fiat upperand lower faces 25 so that it will be obvious that the opening 24 issubstantially rectangular in shape. Means are provided for closing theopening 24 when the valve is in operation. As shown'a closure plate 26is adapted to be arranged over the outer end of the opening 24 and isadapted to be secured to the valve casing by suitablebolts 27. Theclosure plate 26 is also provided with an inwardly projecting portion 28which substantially fills the opening 24 and is provided with an arcuateinner end 29, the face of which forms a substantial continuation of thecircular inner wall of the chamber 16, as shown in Figure 2. It will beobvious that the space between the walls 23 of the opening 24 is atleast as great as the diameter of the valve elementf2l for a purpose tobe described, and the lower face 25 of the opening is arranged a slightdistance above the valve seats 17 and 19.

"he operation of the device is as follows:

'ihe valve casing, without the valve 21 or closure member 26 isconnected at its opposite ends to suitable piping wherever de sired. Thevalve element 21 is then inserted through the opening 24 and allowed todrop to the position shown in Figure l of the drawings. The closuremember is then arranged in position and secured to the casing by meansof the bolts 2? whereupon the valve is ready to be placed in operation.It will be obvious that when the device is employed in the positionshown in Figure 1, liquid is ada ited to how u )wardlv throu h the oJening 11 and to lift the valve 21 from its seats 1"? and 19 whereuponit may continue its movement from the valve casing through the opening12. The valve 21 obviously is permitted to move substantially to thedotted line position shown in Figure 1, the liquid llowing through thevalve seat and through the opening in the center of the valve. Downwardmoven'ient of the liquid of course is prevented by the valve 21. Whenthe liquid tends to low downwardly the valve 21 will immediately returnto closed position preventing downward flow of the liquid. If it becomesdesirable to remove the valve for any reason it will be obvious that theclosure plate 26 may be removed from the casing and the valve 21 may bewithdrawn through the opening 24: without disturbing the connec tionbetween the valve casing and its associated piping. The provision of anintegral valve casing as shown with a relatively large valve ispermitted by virtue of the means for removing the valve from the side ofthe casing. It will be obvious that the upper end of the chamber 16serves to limit the upward movement of the valve 21 and the latter iseii ectually guided in its vertical movement by the inner wall of theupper chamber 16 and the cooperating inner face 29 of the closuremember.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the me and thatvarious changes in the shape,

and arrangement of parts may be resorted to without departing from thespirit of the invention or the scope of the subioined claims.

Having described my invention, 1 claim:

l. A check valve comprising a relatively large valve chamber havingsubstantially axial inlet and outlet openings, a valve seat arranged insaid chamber, a valve adapted to engage against one side o1 said seat,said casing being provided with a substantially radial openingsubstantially equal in width to the diameter of said valve, and a coverfor said radial opening, a portion of said valve being adapted to engagethe walls of said chamber to be guided thereby, said cover beingprovided with an inward extension adapted to engage another portion ofsaid valve to serve as a guide therefor.

A check valve comprising a relatively large valve chamber ofsubstantially circular cross section having relativelv restricted axialinlet and outlet openings a pair of spaced concentric valve seatsarranged within said chamber, a disk valve adapted to ensaid seats andsubstantially fitting within said chamber, said valve being providedwith a central opening, said chamber being provided with a radialopening communicating with said chamber, said opening having oppositesides spaced apart a distance at least equal to the diameter of saidvalve and substantially tangential to the inner wall of said chamber,and a cover for said radial opening, said cover being provided with aninwardly extending portion the inner end 01" which forms a substantialcontinuation of the circular inner wall of said chamber.

In testimony whereof I affix my signature.

WILLIAM A. KER.

